Iwao suzttkawa



Be it known that I, IWAO SUZUKAWA,SL1bder, the superheated fatty acidgiving out 55 ject of the Emperor of Japan, residing at reducing gasessuch as hydrocarbon. Then No. 78 Minami Takeya Clio, in the city ofcarefully mix 55 parts of this metal soap 5 Hiroshima, Hiroshima Ken,Japan, have incontaining fine metal powder with 100 parts vented new anduseful Improvements in of the phenol compound of quinin mentioned Paintfor Coating the Bottoms of Vessels, above and add thereto parts ofresin, 180 of which the following is aspecification. parts of turpentineand 45 parts of any This invention relates to paint for coatsuitablepigment. Mix well the whole by 10 ing the bottoms of vessels andconsists in stirring, and a paste-like paint will be mixing a solutionin benzol of a compound formed. The pigment generally used in of analkaloid, such as quinin, strychnin or my invention is iron oxid, butcopper oxid, the like and phenol with a metal soap and mercuric oxid oraluminium silicate may a metal powder formed by subjecting fattysometimes be used.

15 acid and an oxid of a heavy metal to a high It is well known that itis comparatively heat, and adding thereto resin, turpentine diflicult todissolve in water qu-inin sulfate 1 oil and any desired pigment. Theobject of the formulae Q H SO .8Aq and QII SOQ. i of my invention is toobtain a paint which 7Aq, and for that reason applicant uses genw whilenot freely dissolving in sea water, erally Q.(H SO .7Aq; or, solublequinin 20 gives out sufficient poison to kill the sea sulfate.

weeds and shells that may adhere to the bot- The metal powder referredto herein is toms of vessels and thus protects them from formed byoverheating a mixture of metallic fouling. oxid and fatty acid, wherebythe fatty acid The following is an example of carrying becomessaponified, while at the same time it 25 my invention into practicecracks and gives out reducing gas which re Dissolve a measured quantityof quinin duces the metal oxid and forms a fine meta lsulfate in waterand add thereto a solution of he powder. an alkali which causes thequinin to precipi- In this invention the phenol ester and tate. Put 10parts of the precipitated quialkaloid slowly decomposing in the sea.water 30 nin in 20 parts solution of carbolic acid, and gives out aspecial kind of poison and kills heat the mixture slowly in a water bathfor the germs of shells and sea weeds, and if any three hours, stirringit now and then, thus shells or sea weeds happen to incrust the causingthe quinin and the carbolic acid to bottom, the metal soap and metalpowder combine and form phenol ester. The phenol slowly freeing poisonexterminate them.

35 ester formed in this way is one having the Thus, the paint of myinvention most efmolecular formula of C l-I -flO l-l (NO) fectivelyprotects the bottom of the ship and although it is insoluble in water,it can, from fouling and considerably lengthens its be easily decomposedinto carbolic acid and life. soluble quinin salt, if from any cause itsI claim:

40 acidity be increased. If strychnin is used 1. A paint for coating thebottoms of vesinstead of quinin, the resulting phenol ester sels whichis formed by tho-roughly mixing will have the molecular formula ofphenol ester miscible in oil obtained by C H O.C, H (NO) Remove thewater/ slowly heating a mixture of phenol and from the phenol ester thusobtained by slow alkaloid, with heavy metal soap and fine 45evaporation, and prepare a fluid by dissolvmetal powder obtained bysubjecting a mixing 20 parts thereof in parts of benzol. ture of oxid ofa heavy metal and fatty acid Then take stearic or oleic acid and addthereto a high heat, to which is added varnish or-100 to about equalquantity by weight of a poipaint vehicle, substantially as and for thesonous heavy metal oxid, such as lead oxid purposes as herein described.

50 or zinc oxid, or the like, and subject the 2. A paint for coating thebottom of vesmixture for about one hour to a heat of sels which consistsin mixing phenol ester about 400 C. A metal soap is thus formed misciblein oil obtained by slowly heating a No Drawing.

To all whom it may concern:

a d at the same time part of the metal oxid,

Specification of Letters Patent.

IWAO SUZUKAWA, 0F HIROSHIMA, JAPAN.

Patented Sept. 9, 1919.

Application filed January 26, 1918. Serial No. 213,901.

will be reduced into the fine metallic powmixture of alkaloid andphenol, with metal ii i ili soap and metal powder formed by subjectnameto this specification in the presence of iilg a mixture of fatty acidang oxicl 3f a two subscribing witnesses.

eavy meta to a high heat, an in ad. ing thereto resin, volatile solventand pigment, IWAO SUZUKAWA' 5 substantially as and for the purposesherein Witnesses:

described. YosHIKA IKEDA,

In testimony whereof I have signed my MAKUTA'I'O MOCHIGUKI.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of latents,

Washington, D. G.

